Shopify Plus development in Sydney

Sydney is home to some of the fastest-growing ecommerce brands in the region, and the competition for customer attention is intense. A basic Shopify store won't cut it at this level.

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Flux Agency works with Sydney brands on Shopify Plus projects that range from complete platform builds to targeted optimisation work and long-term retainers. Whether you're launching a new brand or scaling an existing one, we bring the same engineering depth and design precision to every project.

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What we do for Sydney brands

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Custom Shopify Plus builds

Full storefront design and development. UX architecture, conversion-focused design systems, custom checkout extensions, and responsive layouts engineered around your customers' behaviour and your operational stack.

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Headless commerce architecture

For brands that need complete design control and performance that standard themes can't deliver. We build on Hydrogen, Sanity, and Algolia - sub-second page loads, total frontend flexibility, and content workflows your marketing team can actually use.

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Platform migrations

Moving from Magento, WooCommerce, BigCommerce, or custom-built platforms to Shopify Plus. Full data migration, SEO preservation, integration mapping, and phased launch planning.

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Integration engineering

Connecting your Shopify Plus store to ERPs, 3PLs, email platforms, review tools, and custom APIs. We work across Cin7, Klaviyo, Gorgias, Okendo, Recharge, and build bespoke middleware when needed.

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Ongoing platform partnerships

Monthly retainers for feature development, conversion testing, integration maintenance, and strategic upgrades. Your store keeps getting better after launch, not worse.

Are you based in Sydney?

Our headquarters is in Melbourne with people also in Los Angeles and London. We work closely with Sydney brands across all projects - most collaboration happens over video calls and shared project tools, with in-person meetings when it makes sense.

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Can we meet in person?

Yes. We travel to Sydney regularly for kick-off meetings, workshops, and project milestones. We're happy to work in whatever format suits your team best.

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What size brands do you work with?

We work best with brands doing $5M-$100M+ in annual revenue that have found product-market fit and are ready to invest in commerce infrastructure. We assess fit during a paid Discovery phase before any build begins.